Microstructure evolution during annealing of an SPD- processed supersaturated Cu-3 at.% Ag alloy

J. Gubicza, Z. Hegedús, J. L. Lábár, V. Subramanya Sarma, A. Kauffmann, J. Freudenberger

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Supersaturated Cu-3 at.% Ag alloy was processed by rolling at liquid nitrogen temperature and subsequent annealing at 623 K up to 20 min. It was found that after annealing, an inhomogeneous solute atom distribution developed, since the Ag particles with small size and/or large specific interfacial energy were dissolved due to the Gibbs-Thomson effect. In the region where the solute concentration increased, a high dislocation density was retained in the Cu matrix even after annealing, while in the region where the Ag solute content did not increase, the dislocation density decreased by more than one order of magnitude. Therefore, in the cryorolled and annealed samples, heterogeneous microstructures were developed where both the dislocation density and the solute concentration varied considerably.

Original languageEnglish
Article number012091
JournalIOP Conference Series: Materials Science and Engineering
Volume63
Issue number1
DOIs
Publication statusPublished - Jan 1 2014
Event6th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2014 - Metz, France
Duration: Jun 30 2014Jul 4 2014

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ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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